The paper describes a major joint industry project undertaken to develop risk-calibrated design criteria for well casings and tubings. Supported by eighteen oil companies and two regulatory bodies, it included assessment of target safety levels; collection of historical load data and tubular resistance data; gas kick modelling and comparison with field test results; software enhancement; and calculation of risk-calibrated design criteria for the gas kick and tubing leak load cases.

Keywords:
design load, annular pressure drilling, underground blowout, well control, society of petroleum engineers, qra, design factor, upstream oil & gas, probability, risk-calibrated design criteria
Subjects:
Pressure Management, Casing and Cementing, HSSE & Social Responsibility Management, Safety, Information Management and Systems, Well control, Casing design, Contingency planning and emergency response, Operational safety
Copyright 1998, Society of Petroleum Engineers
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